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O-LevelPhysicsForces5054/11 · Oct/Nov 2015 · Q121 Mark

A U-tube containing water is used as a manometer. When one end of the manometer is connected to a low-pressure chamber, both water levels in the manometer change by 20 cm. The gravitational field strength g is 10 N/kg. The density of water is 1000 kg/m³. How far below atmospheric pressure is the pressure in this chamber?

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A2000 Pa

B4000 Pa

C200000 Pa

D400000 Pa

✓ Correct answer

B: 4000 Pa

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About this question

Topic: Forces, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2015 Paper 1 Variant 1, question 12.

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